Q

Q Q in a corner. Something not seen at first, but subsequently
brought to notice. The thong to which seals are attached in legal
documents is in French called the queue; thus we have lettres
scellées sur simple queue or sur double queue, according to
whether they bear one or two seals. In documents where the seal is
attached to the deed itself, the corner where the seal is placed is
called the queue, and when the document is sworn-to the finger
is laid on the queue.